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@ARTICLE{Cieslik:186278,
author = {Cieslik, Edna and Müller, Veronika and Kellermann, Tanja
S. and Grefkes, Christian and Halfter, Sarah and Eickhoff,
Simon},
title = {{S}hifted neuronal balance during stimulus-response
integration in schizophrenia: an f{MRI} study},
journal = {Brain structure $\&$ function},
volume = {220},
number = {1},
issn = {1863-2661},
address = {Berlin},
publisher = {Springer},
reportid = {FZJ-2015-00362},
pages = {249 - 261},
year = {2015},
abstract = {Schizophrenia is characterized by marked deficits in
executive and psychomotor functions, as demonstrated for
goal-directed actions in the antisaccade task. Recent
studies, however, suggest that this deficit represents only
one manifestation of a general deficit in
stimulus–response integration and volitional initiation of
motor responses. We here used functional magnetic resonance
imaging to investigate brain activation patterns during a
manual stimulus–response compatibility task in 18
schizophrenic patients and 18 controls. We found that across
groups incongruent vs. congruent responses recruited a
bilateral network consisting of dorsal fronto-parietal
circuits as well as bilateral anterior insula, dorsolateral
prefrontal cortex (DLPFC) and the presupplementary motor
area (preSMA). When testing for the main-effect across all
conditions, patients showed significantly lower activation
of the right DLPFC and, in turn, increased activation in a
left hemispheric network including parietal and premotor
areas as well as the preSMA. For incongruent responses
patients showed significantly increased activation in a
similar left hemispheric network, as well as additional
activation in parietal and premotor regions in the right
hemisphere. The present study reveals that hypoactivity in
the right DLPFC in schizophrenic patients is accompanied by
hyperactivity in several fronto-parietal regions associated
with task execution. Impaired top-down control due to a
dysfunctional DLPFC might thus be partly compensated by an
up-regulation of task-relevant regions in schizophrenic
patients},
cin = {INM-1 / JARA-BRAIN / INM-3},
ddc = {610},
cid = {I:(DE-Juel1)INM-1-20090406 / $I:(DE-82)080010_20140620$ /
I:(DE-Juel1)INM-3-20090406},
pnm = {571 - Connectivity and Activity (POF3-571)},
pid = {G:(DE-HGF)POF3-571},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000348980800018},
doi = {10.1007/s00429-013-0652-1},
url = {https://juser.fz-juelich.de/record/186278},
}